Loudspeaker
US5937075A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1996 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Apr 4, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R7/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In quality loudspeakers there are certain distortion problems owing to a lack of damping of the movements of the outer, free edge of the loudspeaker diaphragm (2). In connection with the invention it has been recognized that these problems are widely due to some special interference phenomena originating from the total movement of the diaphragm, and according to the invention it has been found advantageous to provide, in the area of the outer edge (6) of the diaphragm (2), a differentiation with respect to the effective spring characteristic of the edge suspension (8) of the diaphragm. This is achievable in a variety of manners, e.g. already by a cutting off of pieces of the exterior diaphragm zone as secured to the edge suspension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.